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AP43

ACER, INC.

AP43

Processor

AM486SX/80486SX/SL80486SX/CX486DX/AM846DX/80486DX/ SL80486DX/CX486DX2/CX486DX2(M7P/O)/TI486DX2/AM486DX2/ (SL)AM486DX2/80486DX2/SL80486DX2/CX486DX4(M7P/O)/ CX486DX4(DX4P/O)/AM486DX4(V8T)/AM486DX4S(SV8T)/ AM486DX4S(SV8B)/80486DX4(WT)/80486DX4(WB)/P24D/P24T/ CX5X86

Processor Speed

25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz

Chip Set

SIS

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

128/256/512KB

BIOS

AMI

Dimensions

250mm x 220mm

I/O Options

32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

CN1

Speaker

J7 pins 7 - 10

Serial port 1

CN2

Turbo/green PC LED

J7 pins 12 & 13

Chassis fan power

CN3

Turbo switch

J7 pins 15 - 17

Chassis fan power

CN4

Reset switch

J7 pins 19 & 20

Floppy drive interface

CN5

External battery

J8

Parallel port

CN6

Green PC connector

JP30

IDE interface 2

CN7

IDE interface LED

JP31

IDE interface 1

CN8

32-bit PCI slots

PC1 - PC3

Power LED & keylock

J7 pins 1 - 5

   

Note: If connector for J7 is 12-pin, connect red wire to pin 11.

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

JP11

Unidentified

Factory configured - do not alter

JP12

Unidentified

 

On board I/O enabled

JP21

Pins 1 & 2 closed

 

On board I/O disabled

JP21

Pins 2 & 3 closed

 

Flash BIOS voltage select 12v

JP24

Pins 2 & 3 closed

 

Flash BIOS voltage select 5v

JP24

Pins 1 & 2 closed

CMOS memory normal operation

JP28

Pins 1 & 2 closed

 

CMOS memory clear

JP28

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

None

None

None

2MB

(1) 512K x 36

None

None

None

2MB

(1) 256K x 36

(1) 256K x 36

None

None

3MB

(1) 512K x 36

(1) 256K x 36

None

None

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

None

3MB

(1) 256K x 36

(1) 512K x 36

None

None

4MB

(1) 1M x 36

None

None

None

4MB

(1) 512K x 36

(1) 256K x 36

(1) 256K x 36

None

4MB

(1) 512K x 36

(1) 512K x 36

None

None

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

(1) 1M x 36

(1) 256K x 36

None

None

5MB

(1) 512K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

5MB

(1) 256K x 36

(1) 512K x 36

(1) 512K x 36

None

5MB

(1) 256K x 36

(1) 1M x 36

None

None

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

None

6MB

(1) 1M x 36

(1) 512K x 36

None

None

6MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

None

6MB

(1) 512K x 36

(1) 1M x 36

None

None

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

DRAM CONFIGURATION (CONT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

7MB

(1) 256K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

8MB

(1) 2M x 36

None

None

None

8MB

(1) 1M x 36

(1) 512K x 36

(1) 512K x 36

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

8MB

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

9MB

(1) 2M x 36

(1) 256K x 36

None

None

9MB

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

None

9MB

(1) 256K x 36

(1) 2M x 36

None

None

10MB

(1) 2M x 36

(1) 256K x 36

(1) 256K x 36

None

10MB

(1) 2M x 36

(1) 512K x 36

None

None

10MB

(1) 1M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

10MB

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

None

10MB

(1) 512K x 36

(1) 2M x 36

None

None

11MB

(1) 2M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

12MB

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

None

12MB

(1) 2M x 36

(1) 1M x 36

None

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

12MB

(1) 1M x 36

(1) 2M x 36

None

None

13MB

(1) 256K x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

14MB

(1) 2M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

14MB

(1) 512K x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

None

None

None

16MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

None

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

17MB

(1) 4M x 36

(1) 256K x 36

None

None

17MB

(1) 256K x 36

(1) 2M x 36

(1) 2M x 36

None

17MB

(1) 256K x 36

(1) 4M x 36

None

None

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

None

18MB

(1) 4M x 36

(1) 512K x 36

None

None

18MB

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

None

18MB

(1) 512K x 36

(1) 4M x 36

None

None

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

None

20MB

(1) 4M x 36

(1) 1M x 36

None

None

20MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

None

20MB

(1) 1M x 36

(1) 4M x 36

None

None

22MB

(1) 4M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

None

24MB

(1) 4M x 36

(1) 2M x 36

None

None

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

None

DRAM CONFIGURATION (CONT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

24MB

(1) 2M x 36

(1) 4M x 36

None

None

25MB

(1) 256K x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

26MB

(1) 512K x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

28MB

(1) 1M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

32MB

(1) 8M x 36

None

None

None

32MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

33MB

(1) 8M x 36

(1) 256K x 36

None

None

33MB

(1) 256K x 36

(1) 4M x 36

(1) 4M x 36

None

33MB

(1) 256K x 36

(1) 8M x 36

None

None

34MB

(1) 8M x 36

(1) 256K x 36

(1) 256K x 36

None

34MB

(1) 8M x 36

(1) 512K x 36

None

None

34MB

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

None

34MB

(1) 512K x 36

(1) 8M x 36

None

None

35MB

(1) 8M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 8M x 36

(1) 512K x 36

(1) 512K x 36

None

36MB

(1) 8M x 36

(1) 1M x 36

None

None

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

None

36MB

(1) 1M x 36

(1) 8M x 36

None

None

38MB

(1) 8M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

40MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

None

40MB

(1) 8M x 36

(1) 2M x 36

None

None

40MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

40MB

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

None

40MB

(1) 2M x 36

(1) 8M x 36

None

None

44MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

None

48MB

(1) 8M x 36

(1) 4M x 36

None

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

48MB

(1) 4M x 36

(1) 8M x 36

None

None

49MB

(1) 256K x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

50MB

(1) 512K x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

52MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

56MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

56MB

(1) 2M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

None

64MB

(1) 8M x 36

(1) 8M x 36

None

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 16M x 36

None

None

None

65MB

(1) 256K x 36

(1) 8M x 36

(1) 8M x 36

None

DRAM CONFIGURATION (CONT)

Size

Bank 0

Bank 1

Bank 2

Bank 3

65MB

(1) 16M x 36

(1) 256K x 36

None

None

66MB

(1) 16M x 36

(1) 256K x 36

(1) 256K x 36

None

66MB

(1) 16M x 36

(1) 512K x 36

None

None

67MB

(1) 16M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

68MB

(1) 16M x 36

(1) 512K x 36

(1) 512K x 36

None

68MB

(1) 16M x 36

(1) 1M x 36

None

None

68MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

None

70MB

(1) 16M x 36

(1) 512K x 36

(1) 512K x 36

(1) 512K x 36

72MB

(1) 16M x 36

(1) 2M x 36

None

None

72MB

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

None

76MB

(1) 16M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

80MB

(1) 16M x 36

(1) 2M x 36

(1) 2M x 36

None

80MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

None

88MB

(1) 16M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

96MB

(1) 16M x 36

(1) 4M x 36

(1) 4M x 36

None

96MB

(1) 16M x 36

(1) 8M x 36

None

None

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

None

97MB

(1) 256K x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

98MB

(1) 512K x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

100MB

(1) 1M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

104MB

(1) 2M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

112MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 16M x 36

(1) 8M x 36

(1) 8M x 36

None

128MB

(1) 16M x 36

(1) 16M x 36

None

None

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

Note: Board also accepts x 32 SIMMs. The location of the banks is unidentified.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

128KB

(4) 32K x 8

None

(1) 16K/32K x 8

256KB (A)

(4) 32K x 8

(4) 32K x 8

(1) 16K/32K x 8

256KB (B)

(4) 64K x 8

None

(1) 16K/32K x 8

512KB (A)

(4) 64K x 8

(4) 64K x 8

(1) 32K x 8

512KB (B)

(4) 128K x 8

None

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP1

JP2

JP3

JP4

JP5

128KB

1 & 2, 3 & 4

1 & 2

2 & 3

1 & 2

1 & 2

256KB (A)

2 & 3, 4 & 5

2 & 3

2 & 3

1 & 2

2 & 3

256KB (B)

1 & 2, 3 & 4

1 & 2

1 & 2

1 & 2

2 & 3

512KB (A)

2 & 3, 4 & 5

2 & 3

2 & 3

2 & 3

2 & 3

512KB (B)

1 & 2, 3 & 4

1 & 2

2 & 3

2 & 3

2 & 3

Note: Pins designated should be in the closed position.

CPU SPEED SELECTION

Speed

JP25

JP26

JP27

25MHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

33MHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

40MHz

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

50iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

66iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

75iMHz

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

100iMHz

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU TYPE SELECTION

Type

JP6

JP7

JP8

JP9

AM486SX

Open

Pins 2 & 3 closed

Open

Open

80486SX

Open

Pins 2 & 3 closed

Open

Open

SL80486SX

Open

Pins 2 & 3 closed

Open

Open

CX486DX

Open

Pins 2 & 3 closed

Open

Open

AM486DX

Open

Pins 2 & 3 closed

Open

Open

80486DX

Open

Pins 2 & 3 closed

Open

Open

SL80486DX

Open

Pins 2 & 3 closed

Open

Open

CX486DX2

Open

Pins 2 & 3 closed

Open

Open

CX486DX2 (M7 P/O)

Open

Pins 2 & 3 closed

Open

Open

TI486DX2

Open

Pins 2 & 3 closed

Open

Open

AM486DX2

Open

Pins 2 & 3 closed

Open

Open

(SL) AM486DX2

Open

Pins 2 & 3 closed

Open

Pins 2 & 3 closed

80486DX2

Open

Pins 2 & 3 closed

Open

Open

SL80486DX2

Open

Pins 2 & 3 closed

Open

Open

CX486DX4 (M7 P/O)

Open

Pins 2 & 3 closed

Open

Open

CX486DX4 (iDX4P/O)

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

AM486DX4 (V8T)

Open

Pins 2 & 3 closed

Open

Open

AM486DX4S (SV8T)

Open

Pins 2 & 3 closed

Open

Open

AM486DX4S (SV8B)

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

80486DX4 (WT)

Open

Pins 2 & 3 closed

Open

Open

80486DX4 (WB)

Open

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

P24D

Open

Pins 1 & 2 closed

1 & 2

1 & 2

P24T

Pins 1 & 2 closed

Pins 1 & 2 closed

Open

Open

CX5X86

Open

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU TYPE SELECTION (CONT)

Type

JP10

JP13

JP14

JP15

JP16

AM486SX

Open

Open

Open

2 & 3

Open

80486SX

Open

Open

Open

2 & 3

Open

SL80486SX

1 & 2

Open

2 & 3

2 & 3

Open

CX486DX

1 & 2

2 & 3

1 & 2

1 & 2, 3 & 4

3 & 4

AM486DX

Open

Open

Open

1 & 2, 3 & 4

3 & 4

80486DX

Open

Open

Open

1 & 2, 3 & 4

3 & 4

SL80486DX

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

CX486DX2

1 & 2

2 & 3

1 & 2

1 & 2, 3 & 4

3 & 4

CX486DX2 (M7 P/O)

1 & 2

2 & 3

1 & 2

1 & 2, 3 & 4

3 & 4

TI486DX2

1 & 2

2 & 3

1 & 2

1 & 2, 3 & 4

3 & 4

AM486DX2

Open

Open

Open

1 & 2, 3 & 4

3 & 4

(SL) AM486DX2

Open

Open

Open

1 & 2, 3 & 4

3 & 4

80486DX2

Open

Open

Open

1 & 2, 3 & 4

3 & 4

SL80486DX2

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

CX486DX4 (M7 P/O)

1 & 2

2 & 3

1 & 2

1 & 2, 3 & 4

3 & 4

CX486DX4 (iDX4P/O)

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

AM486DX4 (V8T)

Open

Open

Open

1 & 2, 3 & 4

3 & 4

AM486DX4S (SV8T)

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

AM486DX4S (SV8B)

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

80486DX4 (WT)

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

80486DX4 (WB)

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

P24D

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

P24T

1 & 2

1 & 2

2 & 3

1 & 2, 3 & 4

2 & 3

CX5X86

1 & 2

Open

2 & 3

1 & 2, 3 & 4

3 & 4

Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CONT)

Type

JP17

JP18

JP19

JP20

JP29

AM486SX

Open

Open

Open

Open

2 & 3

80486SX

Open

Open

Open

Open

2 & 3

SL80486SX

3 & 4

Open

1 & 2

4 & 5

2 & 3

CX486DX

2 & 3

2 & 3

Open

2 & 3

2 & 3

AM486DX

Open

Open

Open

Open

2 & 3

80486DX

Open

Open

Open

Open

2 & 3

SL80486DX

3 & 4

Open

1 & 2

4 & 5

2 & 3

CX486DX2

2 & 3

2 & 3

Open

2 & 3

2 & 3

CX486DX2 (M7 P/O)

2 & 3

2 & 3

Open

2 & 3

1 & 2

TI486DX2

2 & 3

2 & 3

Open

2 & 3

1 & 2

AM486DX2

Open

Open

Open

Open

2 & 3

(SL) AM486DX2

Open

Open

Open

Open

1 & 2

80486DX2

Open

Open

Open

Open

2 & 3

SL80486DX2

3 & 4

Open

1 & 2

4 & 5

2 & 3

CX486DX4 (M7 P/O)

2 & 3

2 & 3

Open

2 & 3

1 & 2

CX486DX4 (iDX4P/O)

1 & 2, 3 & 4

1 & 2

2 & 3

4 & 5

1 & 2

AM486DX4 (V8T)

Open

Open

Open

Open

1 & 2

AM486DX4S (SV8T)

3 & 4

Open

1 & 2

4 & 5

1 & 2

AM486DX4S (SV8B)

1 & 2, 3 & 4

1 & 2

2 & 3

4 & 5

1 & 2

80486DX4 (WT)

3 & 4

Open

1 & 2

4 & 5

1 & 2

80486DX4 (WB)

1 & 2, 3 & 4

1 & 2

2 & 3

4 & 5

1 & 2

P24D

1 & 2, 3 & 4

1 & 2

2 & 3

4 & 5

2 & 3

P24T

3 & 4

1 & 2

Open

1 & 2

2 & 3

CX5X86

1 & 2, 3 & 4

1 & 2

2 & 3

4 & 5

1 & 2

Note: Pins designated should be in the closed position.

DMA CHANNEL SELECTION

Channel

JP22

JP23

1

Pins 2 & 3 closed

Pins 2 & 3 closed

3

Pins 1 & 2 closed

Pins 1 & 2 closed